Sewer-trap



A (No Model.)

.H. VA. PALMER.

. 'SEWER TRAP.

Patennea Jan. 7, 1890.

mumm her, wnhin tm u. c,

` ments in seWer-traps, and the purpose thereof* citizen of the United States, residing at Erie,

the catch basins of sewers to prevent floating 'taken'inplanesforming less than a right HORACE A. PALMER, OF

PATENT OFFICE.

'ERIE, PENNSYLVANIA.

- V SEWER-TRAP.

` SPECIFICATION farming part of Letters Patent No. 418,816, dated January 7, 1890.

I Application filed August 9, 1889.

Serial N0. 320,212. (No model.)

T0 aZ? whom iz# may concern:

Be 1t known that I, HORA'CE A. PALMER, a

in the county of Erie and State of Pennsylvania, haveinvented certain' new and useful Improvements in Se wer Traps; and I do hereby declarethe following` to bea full, clear, and exact description of the invention, such aswill enable others skilled in the art to which it appertains to mal'ze and use the; same. My invention relates to certain improveis to provide a simple and novel construction and combination of part-s cnstituting a detachable'hood and valve combined, whereby a mechanical and water seal is provided for material from passing into the main sewer, anda perfect water-seal provided in all constructions, the parts being easily accessible through the man-hole and the hood being readily removed at any time for inspection or for fiushing. u

The invention consists in the several novel features of construction and new combinations of parts hereinafter fully set forth, and then definitely* pointed out in the claims following this specification. i

Referring to the accompanying drawings, Figure 1 is a vertical section showing a sewertrap or catch-basin in which my invention is embodied. Fig. 2 is a perspective View of the hood. Fig. 3 is a perspective view of the trap and its box. Fig. 4 is a vertical section, of the hood, together with a part of the box.

In the said drawings,the reference-letter A denotes the catch-basin, having an area 13, into which the valve opens.

The letter C designates the valve-box, which is formed of metal in the form of a parallelo gram or a short section of a rectangular metallic casing severed by two parallel cuts,

angle with the axis .of the casing. Thus whenthe box is set in a vertical wall of 1nasonry, separating the catch-b'asin from the area into which it opens, it will occupy an inclined position, as shown in Fig. 1. Upon that periphery of the' box facing upon the catch-basin I form a 'flange c, which preferably eXtends entirely around the rectangular it is set. of the flange, or above the'sewer-inlet, is hung.

box and overlaps upon the masonry in which Upon the upper horizontal portion a hood E, formed of suitable metal, nearly semicircular at its lowest edge and for a little distance above the same, and thence contracting toward the upper horizontal edge, upon which is formed a straight downward- -1 y-turn ed flange or hooke, which engages :with the flange c on the box and sustainsthe .hood, the latter standing out from the ma- 'sonry sufficiently to receive the former,

thereby locating the point of connection wholly above the waterlevel and above the The edges of the Upon the open face of the boX C, adjacent v to the area B, is hung the valve I). (Shown in Fig. It is provided with hooks which engage lugs on' the box; -but this construction, while it enters as an element therein, forms no prominent part of my present invention and requires no specific description.

The function of the hood E is to prevent floating matter from passing through the valve-box, and for this purpose two forms of hoods have heretofore been used. In one form the hood has been hinged to the top of the valve-box by a series of bolts, and when removed it has been necessary to remove the nuts from the bolts. variably corroded with rust, the task is always a difficult one.

In another construction the valve-box is dispensed with entirely, and an opening is formed in the masonry and protected by a hood having a continuous inwardly-turned flange engaging with a dovetailed projection mounted on the masonry, whereby the hood. may be removed by lifting it and slid- As these parts are ining its continuous fiange out of engagement with such projection. As the water normally stands above the lower portionof the hood,

formin g a water seal, this construction is open to the same obj ection, that the corrosion of the engaging portions not only those below,

ICO

but those above the surface of the water as wellwill soon unite the parts so closely that they can only be disengaged with much difficulty and by the exertion of great force. In order, therefore,' that the hood may be readily removed, and to this end be eonuected with the valve-box by a free joint wholly removed from the action of the water and located above the sewer-inlet, and in order that the well or catch-hasim may be of the Smallest dimensions required, I construot the hood in the manner shown and connect it to the valve-box,` as 'described, in order that the operator may, by seizing a handle formed thereon, raisesaid hood oit its hearing and remove it entirely from the catch'- basin readily and quickly and without difficulty, and without the necessity of removing holts or nuts or inverting the hood or entering the catch-basin, the npward lift upon said hood rocking it upon its point of support and releasing it from any abnormal adhesion thereto.

In case a sudden storm breaks while the basin is being cleaned, the hood, when made in accordance with my invention, may beinstantly replaced, and will at once assume its proper position to protect the 'box, The hood being of iron, is so heavy that iti's always preserved in proper position by its own weight.

\Vhat I claim is# 1. In a sewer-trap or eatch-basin, the conr bination, witha valve-box constructed to be set in masonry and provided with a lateral fiange for overla1 )ping' the masonry, of a hood overhanging and covering the openend of the valve-box, said hood being sustained 'by a hook-shaped fiange formed uponits upper horizontal edge, said flange being dropped over the fiange on the valve-box, whereby the point of support and connection is located wholly above the water-level or sewerinlet, and a free joint formed between the hood and box, substantially as described.

2. In a sewer-trap or eatch-basin5 the coinbination, with a valve-box set ;in the masonry and having upon its edge a fiange overlying the outer face of the masonry, of a hood overhanging and covering the open end of the box, said hood being substantially semi- Circular at its lower end and .contrasting to ward its upper end, where a downwardly- 'turned fiange or hook is formed adapted to I seat upon and inelose the fiange on the hp per side of the valve-box, thereby forming a hood which drops heiow the water-line and is detachably connected with the valve-box by a free joint located above the sewer-inlet or above the water-line, substantially aside scribed.

3. Ina sewer-trap or catclrbasin, the 'combination, with an inclined valve-box C, set in the wall between the cateh basin and the sewer, or the entrance thereto, of a hood E, overhanging the open end of the box and having* a downwardly-tnrned flange or hook e, adapted to engage a fiange c, formed on 'the edge ofthe valve-box, and a valve D, supported at its upper end by flanges or .hooks on the opposite open end of the valvebox, substantially as described.

lu testimony whereof I afiix my signature in presence of two witnesses.

` HORACE `A. PALMER; witnesses:

JNo. K. HALLOCK, WM. P. IIAYES. 

